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CA2170533A1 - Process for the preparation of calcium aluminates from aluminium dross residues - Google Patents

Process for the preparation of calcium aluminates from aluminium dross residues

Info

Publication number
CA2170533A1
CA2170533A1 CA002170533A CA2170533A CA2170533A1 CA 2170533 A1 CA2170533 A1 CA 2170533A1 CA 002170533 A CA002170533 A CA 002170533A CA 2170533 A CA2170533 A CA 2170533A CA 2170533 A1 CA2170533 A1 CA 2170533A1
Authority
CA
Canada
Prior art keywords
preparation
calcium aluminates
calcium
fluoride
aluminium dross
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002170533A
Other languages
French (fr)
Other versions
CA2170533C (en
Inventor
Yvan Huard
Gilles Mathieu
Raymond Breault
Sylvain Paul Tremblay
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ALUMICA CANADA Inc
Rio Tinto Alcan International Ltd
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/125,594 external-priority patent/US5407459A/en
Application filed by Individual filed Critical Individual
Publication of CA2170533A1 publication Critical patent/CA2170533A1/en
Application granted granted Critical
Publication of CA2170533C publication Critical patent/CA2170533C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/064—Dephosphorising; Desulfurising
    • C21C7/0645—Agents used for dephosphorising or desulfurising
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/44—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Metallurgy (AREA)
  • Processing Of Solid Wastes (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

The present invention is concerned with a process for the preparation of sintered calcium aluminates that can generally be used as a protective cover for liquid metals, and particularly steel, the process comprising the steps of mixing calcium oxide, or its precursor, particles and aluminum dross residue, such as NOVAL.TM.; calcining the resulting mixture; maintaining a calcining temperature of 1200 °C or higher for approximately 5 minutes or more which is sufficient to form a friable sintered product rich in calcium aluminates; and recovering the sintered product after cooling. Optionally, calcium fluoride, or other fluoride can be added to the starting mixture, if it is not already contained in the dross residue.
CA 2170533 1993-09-23 1994-09-19 Process for the preparation of calcium aluminates from aluminium dross residues Expired - Fee Related CA2170533C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/125,594 US5407459A (en) 1993-09-23 1993-09-23 Process for the preparation of calcium aluminates from aluminum dross residues
US08/125,594 1993-09-23
PCT/CA1994/000509 WO1995008516A1 (en) 1993-09-23 1994-09-19 Process for the preparation of calcium aluminates from aluminum dross residues

Publications (2)

Publication Number Publication Date
CA2170533A1 true CA2170533A1 (en) 1995-03-30
CA2170533C CA2170533C (en) 2006-08-01

Family

ID=36764224

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2170533 Expired - Fee Related CA2170533C (en) 1993-09-23 1994-09-19 Process for the preparation of calcium aluminates from aluminium dross residues

Country Status (1)

Country Link
CA (1) CA2170533C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112121611A (en) * 2020-09-24 2020-12-25 西南科技大学 A kind of method for preparing cement kiln flue gas purifying agent from aluminum ash
CN112499657A (en) * 2020-12-07 2021-03-16 张绪祎 Liquid-state melt sintering method for recovering alkali and alumina in iron-poor red mud
CN114054469A (en) * 2021-11-16 2022-02-18 秦皇岛信宝资源循环科技有限公司 Aluminum ash harmless treatment and resource recycling method and system
CN114195177A (en) * 2021-12-28 2022-03-18 中国科学院过程工程研究所 A kind of method utilizing aluminum ash to prepare polyaluminum chloride co-production magnesium aluminum spinel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112121611A (en) * 2020-09-24 2020-12-25 西南科技大学 A kind of method for preparing cement kiln flue gas purifying agent from aluminum ash
CN112499657A (en) * 2020-12-07 2021-03-16 张绪祎 Liquid-state melt sintering method for recovering alkali and alumina in iron-poor red mud
CN114054469A (en) * 2021-11-16 2022-02-18 秦皇岛信宝资源循环科技有限公司 Aluminum ash harmless treatment and resource recycling method and system
CN114195177A (en) * 2021-12-28 2022-03-18 中国科学院过程工程研究所 A kind of method utilizing aluminum ash to prepare polyaluminum chloride co-production magnesium aluminum spinel

Also Published As

Publication number Publication date
CA2170533C (en) 2006-08-01

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20130919